|**GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)**                       | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
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|**Goodwill and Intangible Assets Disclosure [Abstract]**                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Schedule of Changes in Carrying Amounts of Goodwill                     | The assignment of goodwill and changes in the carrying amount of goodwill, by business segment, were as follows:(In millions)SASIMSCSARTotalBalance at December 29, 2023$6,110$6,564$4,940$2,365$19,979Goodwill from AJRD acquisition(1)———496496Impairment of goodwill(14)———(14)Goodwill decrease from divestitures(79)———(79)Currency translation adjustments(4)(10)(1)—(15)Balance at June 28, 2024$6,013$6,554$4,939$2,861$20,367_______________(1)Represents the effect of measurement period adjustments associated with the acquisition of Aerojet Rocketdyne Holdings, Inc. (“AJRD”) during the two quarters ended June 28, 2024. SeeNote O: Acquisitions and Divestituresin these Notes for further information.
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|(In millions)                                                           | SAS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
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|Balance at December 29, 2023                                            | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Goodwill from AJRD acquisition(1)                                       | —                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Impairment of goodwill                                                  | (14)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Goodwill decrease from divestitures                                     | (79)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Currency translation adjustments                                        | (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Balance at June 28, 2024                                                | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Schedule of Indefinite-Lived Intangible Assets                          | Other identifiable intangible assets, net are summarized below:June 28, 2024December 29, 2023(In millions)Gross Carrying AmountAccumulated AmortizationNet Carrying AmountGross Carrying AmountAccumulated AmortizationNet Carrying AmountCustomer relationships$8,843$(3,095)$5,748$8,892$(2,733)$6,159Developed technologies851(450)401856(413)443Trade names — divisions185(57)128185(50)135Other, including contract backlog2(2)—4(4)—Total finite-lived identifiable intangible assets9,881(3,604)6,2779,937(3,200)6,737Trade names — corporate1,803—1,8031,803—1,803Total identifiable intangible assets, net$11,684$(3,604)$8,080$11,740$(3,200)$8,540                                                             
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|                                                                        | June 28, 2024                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|(In millions)                                                           | Gross Carrying Amount                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Customer relationships                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Developed technologies                                                  | 851                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Trade names — divisions                                                 | 185                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Other, including contract backlog                                       | 2                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Total finite-lived identifiable intangible assets                       | 9,881                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Trade names — corporate                                                 | 1,803                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Total identifiable intangible assets, net                               | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Schedule of Finite-Lived Intangible Assets                              | Other identifiable intangible assets, net are summarized below:June 28, 2024December 29, 2023(In millions)Gross Carrying AmountAccumulated AmortizationNet Carrying AmountGross Carrying AmountAccumulated AmortizationNet Carrying AmountCustomer relationships$8,843$(3,095)$5,748$8,892$(2,733)$6,159Developed technologies851(450)401856(413)443Trade names — divisions185(57)128185(50)135Other, including contract backlog2(2)—4(4)—Total finite-lived identifiable intangible assets9,881(3,604)6,2779,937(3,200)6,737Trade names — corporate1,803—1,8031,803—1,803Total identifiable intangible assets, net$11,684$(3,604)$8,080$11,740$(3,200)$8,540                                                             
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|                                                                        | June 28, 2024                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|(In millions)                                                           | Gross Carrying Amount                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Customer relationships                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Developed technologies                                                  | 851                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Trade names — divisions                                                 | 185                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Other, including contract backlog                                       | 2                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Total finite-lived identifiable intangible assets                       | 9,881                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Trade names — corporate                                                 | 1,803                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Total identifiable intangible assets, net                               | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Future estimated amortization expense for identifiable intangible assets is as follows:(In millions)Next 12 months$826Months 13-24758Months 25-36590Months 37-48552Months 49-60451Thereafter3,100Total$6,277                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
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|                                                                        | (In millions)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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|Next 12 months                                                          | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Months 13-24                                                            | 758                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Months 25-36                                                            | 590                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Months 37-48                                                            | 552                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Months 49-60                                                            | 451                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Thereafter                                                              | 3,100                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Total                                                                   | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

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